/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.oracle;

import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.HistoryConfigInfoMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

/**
 * The mysql implementation of HistoryConfigInfoMapper.
 *
 * @author hyx
 **/

public class HistoryConfigInfoMapperByOracle extends AbstractMapperByOracle implements HistoryConfigInfoMapper {

	@Override
	public MapperResult removeConfigHistory(MapperContext context) {
		String sql = "DELETE FROM his_config_info WHERE gmt_modified < ? AND ROWNUM <= ?";
		return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.START_TIME),
				context.getWhereParameter(FieldConstant.LIMIT_SIZE)));
	}

	@Override
	public MapperResult findDeletedConfig(MapperContext context) {
		return new MapperResult(
				"SELECT * FROM (SELECT data_id, group_id, tenant_id,gmt_modified,nid,ROWNUM as rnum FROM his_config_info WHERE op_type = 'D' AND "
						+ "gmt_modified >= ? and nid > ? order by nid) WHERE rnum <= ? ",
				CollectionUtils.list(context.getWhereParameter(FieldConstant.START_TIME),
						context.getWhereParameter(FieldConstant.LAST_MAX_ID),
						context.getWhereParameter(FieldConstant.PAGE_SIZE)));
	}

	@Override
	public MapperResult pageFindConfigHistoryFetchRows(MapperContext context) {
		String sql =
				"SELECT * FROM (SELECT nid,data_id,group_id,tenant_id,app_name,src_ip,src_user,op_type,gmt_create,gmt_modified,ROWNUM as rnum FROM his_config_info "
						+ "WHERE data_id = ? AND group_id = ? AND tenant_id = ? ORDER BY nid DESC) WHERE rnum >= "
						+ (context.getStartRow() + 1) + " AND rnum <= " + (context.getPageSize() + context.getStartRow()) + " ";
		return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.DATA_ID),
				context.getWhereParameter(FieldConstant.GROUP_ID), context.getWhereParameter(FieldConstant.TENANT_ID)));
	}

	@Override
	public String getDataSource() {
		return DataSourceConstant.ORACLE;
	}
}

